Device for mounting engraved cylinders in machines for printing cloth and the like



Jan. 8, 1952 Q LUTTENAUER 2,581,593

DEVICE FOR MOUNTING ENGRAVED CYLINDERS IN MACHINES FOR PRINTING CLOTH AND THE LIKE Filed Oct. 24, 1946 4 Sheets-Sheet l 16 22 l: 7 I 4 7 n Y 3Y CAzazou Luz-2251x151;

Jan. 8, 1952 c. LUTTENAUER 2,581,593

DEVICE FOR MOUNTING ENGRAVED CYLINDERS IN MACHINES FOR PRINTING CLOTH AND THE LIKE 4 Sheets-Sheet 2 Filed Oct. 24, 1946 CARLOS ZUTT MAC/87E ATTORNEY 1952 c. LUTTENAUER 2,

DEVICE FOR MOUNTING ENGRAVED CYLINDERS IN MACHINES FOR PRINTING CLQTH AND THE LIKE Filed 001;. 24, 1946 4 Sheets-Sheet 5 //Vl/E/VTOB GARJJOS Z, UTTENAUER A %m R All.

1952 c. LUTTENAUER 2,

DEVICE FOR MOUNTING ENGRAVED CYLINDERS IN MACHINES FOR PRINTING CLOTH AND THE LIKE Filed Oct. 24, 1946 4 Sheets-Sheet 4 nwavrof. @ARLOS Lurrszxmum A Tm/eA/E/ Patented Jan. 8, 1952 DEVICE FOR MOUNTING ENGRAVED CYLIN- DERS IN MACHINES FOR PRINTING CLOTH ANDTHE LIKE Carlos Luttenauer, Mulhouse, France Application octoberg i, 1946, Serial No. 705,289.

In France'December 26, 1945' 8 Claims. 1.

The invention relates to the mountingof the journals of the pattern cylinders in machines for:

printing cloth and the like.

The subject of the invention is a mounting do vice which is remarkable by numerous advantages consisting, inter alia,and in particular, in the fact that: In the first place, it enables a universal adjustment to be effected of the "printing cylinder in the vertical direction, in the radial direction and in the axial direction; it permits, furthermore, the spindle of the printing cylinder to shift slightly so that it can take up oblique positions relative to the spindle of the presser cylinder, while allowing, on the other hand, the said printing cylinder the possibility of free expansion. In the second place, it provides for the replacement of sliding friction in the bearings by rolling friction, which results in a saving of power while ensuring the independence of the journals relatively to the roller bearings with which they mounting device which is the subject of the in-.

vention is mainly characterized in that:

1. Each of the journals of the printing cylinder is engaged between bearing rollers which are arranged in a semi-circleconcentrically to the axis of said cylinder, in a fork-shaped support housed in an open bearing body.

2. The hearing has universal adjustment and, for this purpose, is so arranged and is combined with means such that it allows the journal for which it serves as a housing to be subjected to adjustments in three directions which are perpendicular two by two.

3; The fork carrying the bearing rollersis so mounted in the bearing body that it can eifect small pivoting movements which allow of slight inclinations of the spindle of the printing cylin derobliquely withrespect to that of the presser cylinder.

4.011 the .driven side,;the bearing rollers and also the journal of the printing cylinder areprovided with circular grooves and shoulders of the same shape, the shoulders of therollers engaging in the corresponding grooves of the journal, and reciprocally, in order to produce the displacement of the journal by the rollers of the bearing during the adjustments in the axial direction.

5. On the side opposite to the drive, the bearins rollers and also the journal have a smooth surface, in order to permitof the free axial expansion of the cylinder;

In order to givea better comprehension ofthe invention, and by way of examples which are in no; way' limitative, an embodiment and also a variant are described and diagrammatically i1 lustrated in the accompanying drawings in which:

Fig. l is an overall front elevation, partly in section, of a mounting device according to the invention;

Fig. 2 is a vertical longitudinal section along line II'-II (Fig; 3) of the bearing on the driven side;

Fig. 3 is a horizontal section of the said bearing;

Fig. 4 is a vertical transverse section thereof along line IV-IV (Fig. 2), and

Fig. 5 is a sectional view along V-V (Fig. 2)

Fig. 6 is a vertical longitudinal sectional view along line --VI-VI(Fig. 8) of a variant of the bearing onthe driven side;

Fig. '7 is a vertical sectional View along line VIL-VII (Fig. 6) and Fig. 8 is a sectional view along line 'VIII- -VIII (Fig. 6);

As regards the first embodiment (Figs. 1 to 5), l is the printing cylinder and 2 the presser cylinder, between which the cloth passes; 3 and 4 are the journals of the spindle of the cylinder I, the journal 3, on the driven side, terminating in a square end 5 which receives the driving member; 6 is the bearing body formed by an open box within which is houseda fork i serving as a support for a number of rollers 8 (three in this first embodiment) loosely rotatable, for example with the interposition of thin cylinders 8, on spindles l0 carried by the fork 1. This construction permits the ready detachment of the journals 3, 4 from their bearings, by simply withdrawing the shaft in a'diagonal direction as viewed in Fig. 2.

The bearing body 6 is provided, at its rear part, with a dovetail guide to which enables it to slide vertically ina blockll by the action or a screw threaded rod 12, the base of which is cut to form a worm wheel l3 driven by an actuating worm I4 for the vertical adjustment.

The block II is itself mounted so that it can slide horizontally, by means of a dovetail guide Ila, inanother block l5, and its operation is effected by a screw It for the axial adjustment. The rollers 8 areeach provided with grooves l1 and shoulders 18, of trapezoidal cross-section,

co-operating with shoulders I 9 and grooves 20, of like cross-section provided on the journal 3, thus effecting the movement of said journal in the axial direction throughentraimnent by the mil ers 8, when adjusting the 'pos'itionof the latterby means of the screw [6.

The radial adjustment, for increasing or decreasing the pressure of the cylinder I against the cylinder 2, is effected by means of a screw 2| which shifts radially the assembly formed by the blocks I5 and II, the bearing body 6, the fork l housed in said bearing body, and the rollers 8 which it carries and, consequently, the journal 3.

The fork 1 can, furthermore, effect pivoting movements of small amplitude, owing to the chamfered bearing surface 6bof the bearing body 6, thereby allowing the spindle of the printing cylinder I to take up slight inclinations obliquely with respect to that of the presser cylinder 2.

The mounting of the journal 4, on the side opposite to the drive, is eifected in a similar manner; however, the bearing body is not provided with any member for axial adjustment, As regards the rollers 22, their surface is cylindrical and smooth, and likewise that of the journal 4, thereby permitting of the free expansion of the journal and of the cylinder I.

The variant (if construction shown in Figs. 6 to 8 is similar to the embodiment which has just been described in detail; the members having like functions are designated by the same reference numerals primed. The fork 1' is provided with a cylindrical rear shank la lodged in a block 23 which is mounted so that it can slide vertically in the bearing 6'. The vertical adjustment is effected by rotating the actuating worm I4 which meshes with the worm wheel [3' forming the base of the screw 12', rotation of which causes the raising or the lowering of the block 23. The screw I6 for the axial adjust ment acts on the bearing 6'. As regards the screw 2| for the radial adjustment, it acts on the shank 7a of the fork I.

It is of course understood that the invention is in no way limited to particular embodiments and that it is possible, without exceeding its scope, to imagine modifications and improvements of details, and also to consider the use of means forming equivalents of those given by way of example.

What I claim is:

1. In a printing machine having a printing cylinder rotatably mounted on a shaft, in combination, a pair of bearings for said shaft, each of said bearings comprising a plurality of rollers arranged in a semi-circle around a respective extremity of said shaft, a fork-shaped support for the rollers of each bearing, arranged to permit radial disengagement of the shaft from said rollers by withdrawal therefrom in an upwardly slanting direction, and an open housing for each of said supports, said housing surrounding said support on three sides so as not to interfere with the radial withdrawal of said shaft from said bearing, said rollers including a pair of extreme rollers making contact with said shaft at opposite ends of a diameter inclined with respect to the vertical.

2. The combination according to claim 1 wherein said housing is chamfered to permit a limited axial disalignment of said support and rollers relative to said shaft.

3. In a printing machine having a printing cylinder rotatably mounted on a shaft, in combination, a pair of bearings for said shaft, each of said bearings comprising a plurality of rollers arranged in a semi-circle around a respective extremity of said shaft, one of said extremities having a corrugated surface, the rollers engaging said one extremity having complementary surfor simultaneous axial displacement of the last- 7 mentioned rollers and said shaft, a support for the rollers of each bearing, said support being open on one side so as not to interfere with the radial withdrawal of said shaft from said bearing, and adjusting means for axially displacing the support carrying said last-mentioned rollers.

4. The combination according to claim 3, comprising additional adjusting means for independently displacing each of said supports in two radial directions of the shaft perpendicular to each other.

5. The combination according to claim 3, further comprising an open housing for each support positioned so as not to interfere with said radial withdrawal of the shaft, said housing being chamfered to permit a limited axial disalignment of said support and associated rollers relative to said shaft.

6. A bearing for rotatably supporting a shaft carrying a printing cylinder, comprising a plurality of rollers arranged in a semi-circle around a portion of said shaft, and supporting means for said rollers, said supporting means being open on one side so as not to interfere with the radial withdrawal of said portion from said bearing in an upwardly slanting direction, said rollers including a pairof extreme rollers making contact with said shaft at opposite ends of a diameter inclined with respect to the vertical.

'7. In a printing machine having a printing cylinder rotatably mounted on a shaft, in combination, a pair of bearings for said shaft, each of said bearings comprising a plurality of rollers arranged in a semi-circle around a respective extremity of said shaft, a fork-shaped support for the rollers of each bearing, arranged to permit radial disengagement of the shaft from said rollers, an open housing for each of said supports, said housing surrounding said support on three sides so as not to interfere with the radial withdrawal of saidshaft from said bearing, independent adjusting means for displacing each of said supports in two radial directions of the shaft perpendicular to each other, and additional adjusting means for displacing one of said supports in axial direction of the shaft.

8. The combination according to claim 7 wherein the rollers held in said one of said supports are provided with shoulders and grooves and wherein the extremity of the shaft associated with the last-mentioned rollers has shoulders and grooves cooperating with those of said rollers for axial entrainment of the shaft under the control of said additional adjusting means.

CARLOS LUTTENAUER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

